diff --git a/src/command_manager.cc b/src/command_manager.cc
index 64523b94..be2aa79e 100644
--- a/src/command_manager.cc
+++ b/src/command_manager.cc
@@ -205,7 +205,7 @@ Token parse_percent_token(Reader& reader)
 {
     ++reader;
     const auto type_start = reader.pos;
-    while (reader and isalpha(*reader))
+    while (reader and iswalpha(*reader))
         ++reader;
     StringView type_name = reader.substr_from(type_start);
 
diff --git a/test/regression/1829-unicode-as-string-delimiter/cmd b/test/regression/1829-unicode-as-string-delimiter/cmd
index c42d3140..a9658251 100644
--- a/test/regression/1829-unicode-as-string-delimiter/cmd
+++ b/test/regression/1829-unicode-as-string-delimiter/cmd
@@ -1 +1 @@
-:exec i %дabcд <lt>esc> <ret>
+:exec i %•abc• <lt>esc> <ret>